Horseshoe.



No. 744,277. IATENTED NOV. 1'7, 1903.

F. J. BACON.

HORSESHOHL I APPLICATION FILED JULY 27, 1903.

H0 MODEL.

"witneaaco No. 744,277. Patented November 17, 1903.

UNITED' STATES -ATENT OFFICE.

FREDERICK J. BACON, OF HARTFORD, CONNECTICUT, ASSIGNOR OF TVVO- THIRDS TO NATHAN B. BACON, OF MANCHESTER, VIRGINIA, AND AN- DREW JOHNSON, OF WILLIMANTIC, CONNECTICUT.

H ORSESHOE.

SPECIFICATION forming part of Letters Patent ITO. 744,277, dated November 17, 1903.

Application filed July 27, 1903. Serial No. 167,180. (No model.)

To all whom it may concern: Fig. 6 is a perspective view of a calk, showing Be it known that I, FREDERICK J. BACON, a a square shank. Fig. 7 is a perspective view citizen of the United States, residing at Hartof a toe-calk having a threaded shank. ford, in the county of Hartford and State of Corresponding and like parts are referred to Connecticut, have invented certain new and, in the following description and indicated in useful Improvements in Horseshoes, of which all the views of the drawings by the same refthe following is a specification. erenoe characters.

This invention has forits object to prevent The shoe 1 is of usual shape and may be shod animals from slipping on slimy and icecast, drop-forged, or constructed in any man- [0 covered surfaces, and relates to a novel form ner found most advantageous. The toe porof shoe and calks, the latter comprising lamtion is widened, as shown at 2, preferably for inae of different lengths and having a proreception of the block or pad 3 for cushioning gressive arrangement whereby when the edge the blow and materially assisting in preventof one lamina becomes worn the edge of the ing slipping. The widened portion 2 is pro- I5 next lamina in order comes into play, and so vided upon its under side with a recess t, in on throughout the series, thereby obviating which the pad 3 is secured, the walls ofthe refrequent sharpening of the calks and at the cess being undercut to make positive engagesame time always having a sharp edge to ment with the pad, which is forced into the make positive engagement with the slippery recess. and beneath the inwardly-extending 20 surface andinsure afirm footing. To further walls, as shown most clearly in Fig. 2. The guard against slipping and to relieve the anipad or block '3 is preferably of crescent form mal of the jar incident to traveling over stone and com prises rubber as a base and granules and analogous hard pavements, the shoe is or broken particles of emery, quartz, mineral, provided with a block or pad of rubber orlike or other hard substance, the same being em- 25 material and granules or broken particles of bedded in the rubber and serving to prevent emery, quartz, or similar hard material emslipping by contact of the sharp edges of the bedded therein, said pad being'fitted to the particles with the surface. The antislipping tread side of the shoe and preferably secured. and cushioning pad may be secured to the in a recess formed therein. 1 shoe by cement or in any substantial way and 30 4 For a full description of the invention and may be of any depth corresponding to the the merits thereof and also to acquire a calks, so as to supplement the action of said knowledge of the details of construction of calks in preventing slipping of the'animal the means for effecting the result reference when traveling over slimy and ice-covered is to be had to the following description and surfaces.

35 drawings hereto attached. The shoe is provided with toe and heel While the essential and characteristic feacalks of like formation, each being composed tures of the invention are susceptible of modiof laminae or layers of metal secured together fication, still the preferred embodiment of the and having the end or edge portions sharpinvention is illustrated in the accompanying ened to form edges. The laminae or layers 40 drawings, in which of each calk vary in length in progressive or- Figure 1 is a perspective view of a horseder, whereby the edges of, the several layers shoe embodying the invention. Fig. 2 is a come into play in succession, thereby insurcentral longitudinal section thereof. Fig. 3 ing a sharp edge being always had to make is a sectional view showing the calk provided positive contact with the surface to insure a 45 with a threaded shank. Fig. 4 is a perspe'cfirm footing of the animal shod with shoes tive View of a heel-calk having a threaded embodying the invention. The heel-calks shank. Fig. 5 is a view similar to Fig. 3, are narrow compared with the toe-calk, the showing the calk having a square shank and latter being of a length to extend around the secured to the shoe by riveting or upsetting toe portion of the shoe and curved to conform 50 the terminal portions of the shank members. to the outline thereof. The calks are provided with shanks, which may be threaded, as shown at 5 in Figs. 3, 4, and 7, or said shanks may be square and plain-sided, as shown in Figs. 5 and 6. Shoulders 6 are formed at the base of the shanks and bear against the under side of the shoe and sustain the weight and blow. The calks may comprise any number of laminie or layers, which may be secured together solely by means of the shank portions being confined in the opening of the horseshoe or by means of pins 7 passed through openings formed in the laminze, as shown in Figs. 3, 4t, 6, and 7. In the construction of calk having its shank of angular or square formation, as shown in Figs. 5 and 6, the opening in the shoe will be of a shape corresponding to a cross-section of the shank, and after the latter has been secured in the opening the calk is prevented from turning. The calk may be secured to the shoe in any determinate way, either by the screw-threads, as illustrated, or by having portions of the shank upset or riveted, as shown at 8.

In the form of calk secured to the shoe by riveting or upsetting the shank portions of the outermost lamina are extended beyond the shank portion of the intermediate layer, and these extended portions are upset after the calk has been properly fitted to the shoe. In order that the intermediate layer may be retained in place, its shank portion is made of wedge shape, as shown at 9, said layer being prevented from upward displacement by the shoulders at the base of the wedge portion 9 and from downward displacement by the oppositely-inclined faces of the part 9 engaging with the corresponding inclined faces of the adjacent shank portions of the laminae or layers. The edge portions of the layers are beveled upon opposite sides, so as to bring the cutting edge of the layers'at a point intermediate of parallel planes touching the faces or sides of the respective layers.

In forming the calks the layers must be sufficiently stout to resist the strain and pounding action, and tempered steel is the preferable material. When the edge of the longest layer or element becomes dull and worn, the sharp edge of the layer next in order comes into play to bite into the surface and prevent slipping, and when the second edge becomes dull and worn the cutting edge of the third layer comes into position to make positive contact with the surface to insure firm footing of the animal. It will thus be seen that as the calk wears away a cutting edge proportionately comes into position to perform the desired work, thereby obviating the necessity for removal of the calk at frequent intervals for sharpening.

Having thus described the invention, what is claimed as new is- 1. A horseshoe-calk comprising laminae or layers varying in length and having a progressive arrangement and having a shank formed of integral portions of the respective layers, substantially as set forth.

2. A horseshoe-calk comprising a body and shank portions formed of corresponding layers, the outermost shank elements being extended and adapted to be secured to the shoe by being upset or riveted and the intermediate shank portion having interlocking connection with the outermost shank members, substantially as specified.

3. A horseshoe-calk comprising body and shank portions composed of corresponding layers, the shank portion of the innermost layer being of approximately wedge shape to prevent downward displacement of the intermediate layer when the calk is in place, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

FREDERICK J. BACON. 

